Praesideo 3.5 Installation and User Instructions 4 Amplifiers

en 140

Main

Mains

 

 

 

 

 

 

 

 

 

 

115:

 

 

 

 

 

 

 

 

 

 

 

100-120V

50-60Hz

 

 

 

 

 

 

 

 

 

 

T6.3A 250V

 

 

 

 

 

 

 

 

 

 

230:

 

Control In

 

 

 

 

 

 

 

Audio In

 

220-240V

50-60Hz

 

 

 

 

 

 

 

 

T6.3A 250V

1

2

3

4

5

6

7

8

1

2

Signal Ground

 

 

 

 

 

 

 

 

 

 

Grounded

Floating

 

+ 0 – + 0

–

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Network

2

Control Out

Spare In

Lsp Out

2

Control Out

Spare In

Lsp Out

1

Control Out

Spare In

Lsp Out

4

Control Out

Spare In

Lsp Out

3

1

C NO NC

– – 0V 50V + +

C NO NC

– – 0V 50V + +

C NO NC

– – 0V 50V + +

C NO NC

– – 0V 50V + +

 

 

 

 

 

 

 

Class 2

 

 

 

Caution

 

Wiring

Battery

48V

12A

 

48V

48V

Non-isolated input

+

0

Avis

 

Control Out

Spare In

Lsp Out 1

 

 

C NO NC

– – 0V 50V + +

1

Spare

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Mains

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

115:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

100-120V

50-60Hz

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

T6.3A 250V

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

230:

 

 

Control In

 

 

 

 

 

 

 

Audio In

 

 

 

 

 

 

 

 

 

 

 

 

 

 

220-240V

50-60Hz

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

T6.3A 250V

1

2

3

4

5

6

7

8

1

2

 

 

 

 

 

 

 

 

 

 

 

 

 

Signal Ground

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Grounded

Floating

 

 

 

 

 

 

 

 

+ 0 – + 0 –

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Network

1

 

 

 

 

 

Control Out

Spare In

Lsp Out

2

Control Out

Spare In

Lsp Out

1

Control Out

Spare In

Lsp Out

4

Control Out

Spare In

Lsp Out

 

3

 

 

 

 

 

 

 

 

2

– – 0V 50V + +

 

– – 0V 50V + +

C NO NC

– – 0V 50V + +

C NO NC

– – 0V 50V + +

 

 

 

 

 

 

 

 

 

 

C NO NC

 

C NO NC

 

 

 

 

 

Class 2

 

 

 

Caution

 

Wiring

Battery

48V

12A

 

48V

48V

Non-isolated input

+

0

Avis

Control Out

Spare In

Lsp Out 1

 

 

C NO NC

– – 0V 50V + +

2

figure 8.7: Connecting a spare amplifier

 

Spare In +

100 V

Lsp Out +

1

 

70 V

50 V

50 V

 

 

Spare In -

 

Lsp Out -

 

0 V

100 V

Spare In +

Lsp Out +

2

 

70 V

50 V

50 V

 

 

Spare In -

 

Lsp Out -

 

0 V

figure 8.8: Power amplifier, before spare switching

At the moment the main amplifier (1) goes down, the relay is de-energized and the switches fall into their default positions: Spare In - and Spare In + (see figure 8.9). This means that the audio output of the spare amplifier (2) is routed to the loudspeaker line through the main amplifier (1). The configuration settings (see section 43.3) of the audio outputs are transferred from the main power amplifier to the spare power amplifier. The configuration settings of the audio inputs, control inputs and control outputs are not transferred to the spare power amplifier.

Note

It is allowed to connect one spare power amplifier to more than one main power amplifier.

The actual spare switch is carried out by a relay. See figure 8.8 for the situation before spare switching and figure 8.9 for the situation after spare switching. As long as the main power amplifier (1) functions correctly, this relay is energized (see figure 8.8) and the audio is routed to the loudspeaker line (Lsp Out+ and Lsp Out- terminals). The spare amplifier (2) does not route any audio, since it has no connection to any loudspeaker line.

If an LBB4428/00 amplifier has been taken over by a spare power amplifier, the amplifier goes to standby and audio and control inputs do not work. An AVC microphone on the input is set to OFF and the call volume goes to maximum for all the required zones.

If an PRS-1P500, PRS-2P250 or PRS-4P125 amplifier has been taken over by a spare power amplifier, the amplifier goes to stand-by; the audio inputs do not work, but the control inputs and outputs remain active.

Bosch Security Systems 2011-02

Page 139 Page 141
Page 140
Image 140
Bosch Appliances 3.5 manual Main, Connecting a spare amplifier
Page 139 Page 141

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